3a diseases headlines Flashcards
Bishop Scoring
Rates the favourability of the cervix (10 is good). Based on dilatation, position in vagina, effacement
Partogram
Measures progress in labour.
- dilatation of cervix
- vital signs
- liquor colour
- Fetal heart rate
Cardiotocography
Measures FHR and uterine contactions (you expect variability and accelerations), FHR 110-160, no decelerations. Not useful antenatally unless daily in high risk
Fetal scalp samples
Amnioscope to get blood sample. pH below 7.2 needs delivery as acidotic and hypoxic
Amniocentesis
Fine gauge needle and US. (15 weeks) Chromosomal abnormalities, CMV and toxoplasmosis, Sickle cell, CF and Thallasaemia. 1% miscarry
Chorionic villus sampling
Biopsy of trophoblast. (11 weeks (quicker)) Higher miscarriage rates than amniocentesis. PCR and FISH for results.
Sperm sample boundaries of viability
5-15 million/mL=oligospermia
<32% motile= asthenospermia
Causes of male subfertility
Idiopathic Drug exposure (alcohol, smoking, steroids) Varicocele Antisperm antibodies Infections Kleinfelters CF Kallmans TURP
APGAR score
HR RR Muscle tone Colour Reflex /10. At 1 and 5mins. Resuscitation? Neuro outcome?
Assisted conception
Intrauterine insemination (IUI) if mild sperm problems. Intracytoplasmic sperm injection (ICSI) if severe.
IVF -mulitple follicular development -ovulation and egg collection -fertilisation and culture -embryo transfer. Multiple pregnancy and ovary overstimulation risks
Combined oral contraceptives
Exert negative feedback on gonadotrophin release, inhibiting ovulation. Thin endometrium and thicken cervical plug. Withdrawal bleeds if 1 week break, if not then spotting
Progesterone side effects
Depression Bleeding Amenorrhoea Acne Breast discomfort Weight gain Reduced libido
Oestrogen side effects
Nausea Headaches Increased mucus Fluid retention and weight gain Breast tenderness and fullness Bleeding
Hormonal contraceptive negatives
Major complications (venous thrombosis, venous thromboembolism, migraine, stroke) Minor side effects
Depoprovera
IM injection every 3 months, reduced bone density. Progesterone
Emergency contraception
IUD
Morning after pill
Barrier contraceptives
Male condom Female condom Diaphragms Caps Spermicides
What is the difference between IUDs and IUSs
IUD copper- toxic to sperm
IUS(system)- mirena (progestogen) hormonal.
General advantages and disadvantages
User dependence
Complications
Contraceptive
Protects from STIs
Other contraceptives
Male and female sterilisation
Pneumonia
Fever, tachypnoea, malaise, RDS.
CXR, O2 sats
Amoxicillin
Pneumococcus, mycoplasma, haemophilus, staphylococcus, TB, viral
Croup
Viral laryngotracheobronchitis
6 months to 6 years (2yo)
Upper airway obstruction (=stridor, barking cough, hoarse)
Pred
Epiglottitis
Caused by H. influenza B so went down cos of vaccine. Very acute, no preceding symptoms. Silent. Cant drink. Drooling. Soft stridor
Asthma
Inflammation, hyperresponsiveness, narrowing
Wheeze, cough, breathless, chest tight
Worse at night, triggers, symptoms between exacerbations
Peak flow diary, sleep? exercise?
Salbutamol (ipratropium bromide if young)
Salmeterol
Refer
Viral induced wheeze
Increased risk in preterm and maternal smoking, Small airways more likely to narrow and obstruct due to inflammation. Resolves by 5
Bronchiolitis
1-9 months Poor feeding, apnoea, dry cough, laboured breathing Respiratory syncytial virus PCR analysis of nasal secretions Supportive: humidified oxygen
Cystic fibrosis
CTFR chromosome 7
Meconium ileus, pancreatic enzyme deficiency, malabsorption, atypical pneumonia
Hyperinflation, nasal polyp, sinusitis, failure to thrive
Sweat test 60-125
MDT
Physio, Dornase Alpha, pancreatic enzymes, high calorie diet, ICSI
Otitis media
6-12 months
Eustachian tubes short, horizontal and dont work
Examine tympanic membrane in all fever infants (bright red, bulging)
RSV, rhinovirus, pneumococcus
Regular anaesthesia
(can lead to with effusion, glue ear)
Grommets
Tympanostomy tubes, for ottitis media with effusion. Adenoidectomy can be more effective
Glue ear
2-7 years old
Caused by recurrent ear infections
Decreased hearing
Ear drum dull and retracted with fluid level
Flat trace on tympanometry
Conductive hearing loss, speech and language problems.
Grommets and adenoidectomy
Sensorinueral Deafness
Genetic Injuries, hypoxia, infections More profound hearing loss Doesnt improve and may get worse Amplification or cochlear implant
Conductive hearing loss
Mainly glue ear Eustachian tube dysfunction (down syndrome, cleft palate) Wax Intermittent, not total, resolves Conservative, amplification or surgery
Periorbital cellulitis
Fever, erythema, tenderness of the eyelid
Prompt IV antibiotics
Prevent orbital cellulitis (CT scan, pain, proptosis)
Squint
Strabismus, misallignment of visual axis.
Corneal light reflex test and cover test
Glasses, surgery, patches
Septal defects
more than 3mm is big
Breathless, recurrent chest infections, endocarditis
CXR, ECG, Echo
Occlusion device, prostaglandin infusion
Heart failure
Poor feeding, sweating, tachypnoea, tachycardia, cardiomegaly, gallop, hepatomegaly
neonates=obstructed systemic circulation
infants=high pulmonary flow
older=eisenmenger, rheumatic, cardiomyopathy
Heart lung transplant, diuretics and ACE-I
cyanotic heart disease
Prostaglandin maintains duct patency CXR, ECG, Doppler echo Tetralogy of fallot Transposition of aorta ASD
Rheumatic fever
GABHS
Latent 2-6 weeks then
Pharyngeal infection, polyarthritis, mild fever and malaise
Can lead to pancarditis, involuntary movements and erythema marginatum
Bed rest and aspirin
Antistreptococcal antibodies if persisting
Arrythmias
SVT
Carotid sinus massage or ice pack to face
IV adenosine then electrical cardioversion if that fails
Long QT
Sudden LOC during exercise
Subacute bacterial endocarditis
Fever, anaemia, pallor, splinter haemorrhages, splenomegaly, necrotic skin lesions
Multiple blood cultures
Strep viridans
High dose penicillin and aminoglycoside IV for 6 weeks
GORD
Fluid diet, horizontal posture and short oesophageal length
History of vomiting and failure to thrive
No Ix needed but can do 24hr oesophageal pH test
Thickener to feeds and sit up after feeds
Pyloric stenosis
Projectile vomiting in first few weeks of life.
Visible gastric peristalsis, palpable mass on test feed. Ultrasound diagnosis
Surgery, rehydration and electrolyte correction
IBS
Abdo pain, relieved by defecation Explosive, loose or mucousy stools Bloating Feeling of incomplete defecation Constipation Family history, psychosocial factors
Gastroenteritis
Mostly viral or campylobacter, shigella or salmonella
dehydration
oral rehydration needed in most, IV in shock
Urinary stress incontinence
Involuntary leakage of urine on effort or exertion, coughing or sneezing.
Cystometry needed to confirm not overactive bladder.
Vaginal delivery risk factor
Lose weight and duloxetine
Hydratiform mole
Gestational trophoblastic disease
Extra proliferation of trophoblast, large uterus, BV bleeding, Snowstorm appearance on US
High serum hCG
Suction cuterrage to remove
Overactive bladder
Urgency with or without urge incontinence, usually with frequency or nocturia, in the absence of proven infection.
Urinary diary
Oestrogens, anticholinergics, botox
Uterovaginal prolapse
Descent of the uterus and or vaginal walls beyond normal anatomical confines
Graded 1-4 based on descent
Preg, vaginal delivery, obesity, cough, surgery
Pelvic floor exercises, better labour
Lose weight, treat cough. Pessaries. Hysterectomy. Surgery repair
Anterior uterovaginal prolapse
Cystourethrococoele
Posterior uterovaginal prolapse
Rectocele (rectum) or enterocele (pouch of douglas)
What type of prolapse do you get after hysterectomy
Vault prolapse
Genital tract fistula
Abnormal connection between urinary tract and other organs. Obstructed labour big cause worldwide. Surgery, radio n malignancy causes. Cystoscopy to prove. Surgery to fix
Ovarian cyst
Very painful if ruptures or haemorrhages. Intense pain with endometrioma or dermoid cyst. Urgent surgery
Ovarian torsion
Torsion of the pedicle, bulky due to cyst. Causes infarction of the ovary/ tube and severe pain. Urgent surgery and detorsion is required if the ovary is to be saved
Lichen sclerosis
Thin vulval epithelium, lost collagen. Severe pruritus, worse at night. Pink white papules. Thin skin. Inflammatory adhesions. Biopsy to exclude cancer. Treatment ultra potent steroids
Cervical cancer
90% squamous, also adenocarcinoma HPV= cervical intrapithelial neoplasia. Screening= liquid based cytology Biopsy Treatment= biopsy then trachelectomy then hysterectomy then radio/chemo
Endometrial cancer
Over 60s
90% adenocarcinoma, some adenosquamous
Pill and pregnancy protective (low oestrogen)
PMB
Hysterectomy and bilateral salpingoophrectomy
Ovarian cancer
90% Epithelial, germ cell if under 30
Abdominal distension,
Family history CA125
Late presentation. Hysterectomy. Debulk.
Vulval cancer
Vulval intraepithelial neoplasia, HPV and lichen sclerosis
Pruritis, bleeding, discharge mass
Biopsy
Wide local excision
Vaginal cancer
Often secondary. Can be primary squamous in older women. Intravaginal radiotherapy treatment.
Marasmus
Weight for height more than 3 standard deviations below median (70%), wasted, wizened appearance, apathetic (no oedema)
Kwashiokor
Generalised oedema, sparse and depigmented hair, skin rash, angular stomatitis, distended abdomen, enlarged liver, diarrhoea.
Hischprungs
No myenteric nerve plexus. Doesnt pass meconium in 48 hours, abdomen distends
Meckel diverticulum
Ileal remnant of vitello-intestinal duct. Rectal bleeding not red or melaena. Surgical resection
Wilson disease
Autosomal recessive, chromosome 13. Reduced caeruloplasmin and defective bile excretion= increased copper. Liver, brain, kidney, cornea. Liver biopsy, elevated hepatic copper.
Penicillamine, zinc, liver transplant
Henoch schlonein purpura
Skin rash (buttocks, arms and legs), arthralgia, periarticular oedema, abdo pain, glomerulonephritis. IgA and IgG complexes. NSAIDs
Alport syndrome
Familial nephritis. X linked recessive. Renal failure, males, deafness and ocular defects. Mother has haematuria.
Stephens Johnson syndrome
Severe bullous form of erythema multiforme, mucous membranes. Eye and mouth involvement. Drug sensitivity and infections can cause
Kawasakis disease
Prolonged fever. Conjunctivitis, cervical lymphadenopathy, polymorphous rash, cracked lips, strawberry tongue, oedema then peeling of hands and feet. Can lead to coronary artery aneurysms. IVIG. Aspirin
Kallman syndrome
Delayed or absent puberty and inability to spell. Hypogonadotrophic, hypogonadism. Hormone replacement.
Von willebrands disease
Quantitative or qualitiative deficiency of vwf. Defective platelet plugs.
Autosomal dominant
Brusing, excessive bleeding after surgery, mucosal bleeding (menorrhagia).
Mild= desmopressin
Severe= plasma derived F8
Wilms tumour
Renal tumour
Nephroblastoma, embryonal renal tissue.
Large abdominal mass (mets to lung). CT.
Chemo then nephrectomy
Kleinfelters syndrome
47, XXY Infertility Hypogonadism, small testes Pubertal development can be normal Gynaecomastia Tall stature Can have education and psych problems
Turners syndrome
45, X
Growth hormone therapy and oestrogen.
SHORT FEMALE
Lymphoedema of hands and feet, spoon shaped nails, thick neck. Wide carrying angly, wide nipples, coarctation of aorta, delayed puberty, ovary dysgenesis.
Down syndrome
Trisomy 21
Hypotonic, flat occiput, single palmar creases, incurved 5th finger, wide sandal gap.
Learning difficulty, hearing and vision problems
Risk of duodenal atresia and congenital heart disease
Rapid FISH blood tests
Meiotic non disjunction (maternal age), translocation and mosaicism cause
Edwards syndrome
Trisomy 18 Low birthweight Prominant occiput Small mouth and chin Short sternum Flexed overlapping fingers Rockerbottom feet Cardiac and renal malformations
Patau syndrome
Trisomy 13 Structural defect of brain Scalp defects Small eyes Cleft lip and palate Polydactyly Cardiac and renal malformations
Angelmans syndrome
Imprinting and uniparental disomy (dad).
Chromosome 15
Severe cognitive impairment
Facial appearance (prominent chin, deep set eyes, wide mouth)
Ataxia
Epilepsy
Prader Willi syndrome
Imprinting and uniparental disomy (mum) Chromosome 15 Hypotonia Developmental delay Hyperphagia Obesity
Noonan syndrome
Short webbed neck with trident hair line Pectus excavatum Short stature Congenital heart disease Face (Upturned nose, hooded eyes, low ears)
Williams syndrome
Short Hypercalcaemia Congenital heart disease Learning difficulty Face (Full lips, gapped teeth, upturned nose, wide mouth)
Perthes disease
Avascular necrosis of femoral epiphysis of femoral head then revascularisation and ossification
5-10 year old boy
Hip pain and limp
XRay for increased density then fragmented
Surgical, pin fixation in situ
Kohlers disease
Foot bone disease
Navicular bone, avascular necrosis
Osteochondroses
Osgood schlatters
Osteochondritis of patellar tendon insertion. Physically active adolescent boys. Hamstring tightness. Reduce activity, physio, splint
Wernicke korsakoff syndrome
Thiamine (B1) deficiency. From alcholol abuse
Wernickes= confusion, wide based gait, opthalmoplegia
Korsakoffs= no new memories, confabulation, lack of insight and apathy
Huntingtons disease
Chromosome 4, huntingtin gene, CAG repeats. Neostriatum loss. Chorea. slowed reaction times, increased reflexes, slowed dysdiachokinesia
Alzheimers disease
5As
Anticholinesterase inhibitors (galantamine, donepexil, rivastigmine; can cause bradycardia n epilepsy).
Higher educational level and CV helath is protective
Horners syndrome
Sympathetic fibres disrupted. Miotic, no dilatation, partial ptosis.
MS, Cavernous sinous thrombosis, pancoasts tumour, aortic aneurysm can all cause horners
Bells palsy
LMN. Pregnancy and diabetes risk factors
Oedema causes facial nerve entrapment in facial canal. Abrupt onset weakness. Mouth sags, dribbling, watering, impaired facial movements and expression.
Prednisolone
Parkinsons disease
Loss of dopaminergic neurones in substantia nigra.
Cogwheel rigidity, bradkinesia, resting tremor
L Dopa
Subthalamic nucleus stimulation
Peyronies disease
Scar tissue forms in penis. Causes bend. Collagenase injections can help
Turners syndrome
45X Short girl Hands and feet oedema Coarctation, absent kidney Webbed neck Ovarian dysgenesis. Oestrogen and growth hormone
Ashermans syndrome
Adhesions within the uterus
Poor fertility and little menstruation
Hysteroscopy
Pagets disease of the nipple
Itchy red scaly or crusted nipple from direct extension of intraductal adenocarcinoma.
Looks like nipple eczema, do a biopsy
Mastectomy or lumpectomy and radio
Whats the difference between Prader Willi and Angelman syndrome
Angelman the child has no maternal but two paternal, prader willi the child has no paternal but two maternal
Epigastric pain at night, haematemesis
Duodenal ulcer
Diarrhoea, weight loss, blood in stool, growth failure
IBD
Vomiting and recurrent abdo pain
Pancreatitis
Jaundice and recurrent abdo pain
Liver disease
Dysuria, secondary enuresis, abdo pain
UTI
Bilious vomiting abdo distension and pain
Malrotation
Alcohol dependence
- compulsion to drink
- prioritise drinking over other activities
- stereotyped pattern of drinking
- increased tolerance to alcohol
- repeated withdrawal symptoms
- relief drinking to avoid withdrawal
- reinstatement after abstinence
Can mental health act be invoked for substance misuse and dependence
No but it can be for secondary disorders
First rank symptoms of schizophrenia
Auditory hallucinations
Delusions of thought control
Delusions of control (passivity phenomenon)
Delusional perception
Define delusion
Unshakeable belief that is held in the face of evidence to the contrary and that cannot be explained by culture or religion
Define hallucination
A perception that arises in absence of a stimulus and is not subject to conscious manipulation
Hebephrenic schizophrenia
Prominent mood changes
Catatonic schizophrenia
Prominent psychomotor disturbances
Residual schizophrenia
From an early stage with psychotic symptoms to a secondary phase with negative symptoms
Diagnosing schizophrenia
2+ first rank, scoial occupational dysfunction, 6 month period with 1 month of symptoms.
Exclude mood disorder and substance missuse
Schizoaffective disorder
Prominent affective and schizophrenic symptoms in the same episode of illness. Different from post schizophrenic depression and bipolar
Bipolar
Bipolar 1= mania and major depression, bipolar 2= hypomania and major depression Psychological treatments Antipsychotics, benzos for manic Antidepressants for depressive Mood stabilisers to prevent relapse Lithium, lamotrigine, valproate
Cyclothymia
Numerous episodes of mild elation and mild depressive symptoms that do not meet the criteria for bipolar
Hypomania
Mood is elevated expansive or irrtiable. No psychotic features or marked impairment of social functioning
Depression
Low mood, low energy and anhedonnia
+poor apetite, sleep, libido, concentration, worthless, hopeless, psychomotor retardation
Psychological, social, SSRIs, SRIIs, TCAs
postpartum depression
Edinburgh post natal depression scale. Sertralline, CBT. Have a low threshold for MDT
Post partum pscyhosis
2 weeks post partum. Psychotic and affective symptoms. Psychosocial factors. Rapidly fluctuating
Anxiety
Exaggerated response to threat or danger. Lasts more than 3 weeks interferes with daily life.
Exervise, meditation, SSRIs or Benzos
OCD
Compulsions- senseless repeated rituals. Obsessions- stereotyped, purposeless words, ideas or phrases that come into mind.
CBT, Clomipramine, SSRI
Panic disorders
Reoccuring unexpected panic attacks. Fluoxetine
PTSD
Reexperiencing, autonomic hyperarousal, avoidance of things attached with event, hyper-vigilance, sleep disturbance, poor concentration
Amygdala
CBT EMDR
SSRIs
Phobia
Anxiety is only experienced in certain well defined situations that arent dangerous.
CBT, SSRI, TCA, pregabalin
Somatasisation disorder
Physical symptoms that can not be accounted for by a physical disorder or other psychiatric disorder
Personality disorders
Longlasting rigid patterns of thought, affect and behaviour
- Markedly disharmonious attiudes and behaviours
- Prevailing chronic abnormal behaviour patterns
- present in broad range of situations
- manifest before18 and continue into childhood
- personal distress caused by this
- occupational and social performance problems
Paranoid personality
Suspicious, preoccupied with conspiratorial explanations, distrusts others, holds grudges
Schizoid personality
Emotionally cold, lacks interest in others, rich fanatasy world, excessive introseption
Dissocial/ antisocial personality
Aggressive, easily frustrated, lack of concern for others, irresponsible, impulsive, unnable to maintain relationships, criminal activity, lack of guilt (psychopath)
Borderline emotionally unstable personality
Feeling of emptiness, unclear identity, intense and unstable relationships, unpredictable affect, threats or acts of self harm, impulsivity, pseudohallucinations
Impulsive emotionally unstable personality
Inability to control anger or plan, unpredictable affect and behaviour
Histrionic personality
Over dramatize, self centred, shallow affect, labile mood, seeks attention and excitement, manipulative behaviour, seductive
Narcissistic personality
high self importance, lacks empathy, takes advantage, gradiose, needs admiration
Anankastic personality
OCD, worrier, judgemental
Anxious personality
Extremely anxious and tense, self concious and insecure, timid, desires to be liked
Dependent personality
Passive, clingy, submissive, excess need for care
Migraine headache
Featureful, unilateral, episodic. Sumatriptan, propanolol, aspirin
Tension headache
Bilateral pressing headaches. Featureless. Lifestyle advice. Asprinin
Medication overuse headache
Worsens on analgesia
Cluster headache
Excruciating pain, ipsilateral, autonomic. O2, sumatriptan. Nifedipine, prednisolone
How do you reverse warfarin
Beriplex and vitamin K
Stroke
Ischaemic, asprin and alteplase within 4.5 hours
Haemorrhagic: beriplex n vit K, IV mannitol
Anterior cerebral artery stroke symptoms
Leg signs, trunk apraxia, frontal lobe= drowsy and less spontaneous speech
middle cerebral artery stroke symptoms
Facial drop, dysphasia, leg and arm weakness
Posterior cerebral artery stroke symptoms
Homonymous hemianopia. Visual signs.
Posterior circualtion stroke symptoms
Big. Paresis, LOC, locked in, vertigo
Occipital lobe function
Vision
Temporal lobe function
Language comprehension, hearing, memory, behaviour
Pitiutary gland function
Hormones
Growth
Fertility
Brainstem function
Breathing
Blood pressure
Heartbeat
Swallowing
Cerebellum function
Balance
Coordination
Fine motor control
Parietal lobe function
Judgement, calculations, reading, writing
Cerebellar symptoms
Dysdiadochokinesis, Ataxia, Slurred speech, hypotonia, intention tremor, nystagmus, gait
Tumours, infection, stroke, Arnold Chiari malformation, toxic, friedreichs ataxia, MS
Epilepsy
Recurrent tendency to spontaneous intermittent, abnormal electricity in part of the brain manifesting in seizures
Focal= carbamazepine (sodium CB)
Generalised= sodium valproate (CCB)
NEAD
Resemble seizures but arent associated with electrical activity in the brain. Comorbidities with IBS and fatigue, functional. Immobilisation of body parts is a sign
Narcolepsy
(Gelineuas syndrome). Young man, succumbs to inappropriate sleep, hynogogic hallucinations, cataplexy, sleep paralysis. Autoimmune destruction of hypothalamic neuros. Modafinil stimulant is the treatment
Cataplexy
Bilateral loss of tone in antigravity muscles provoked by emotions. Associated symptoms. Brief but injury can occur.
Shingles
Oral analgesia, Acicolvir.
In one dermatome normally, can be opthalmic.
Herpes Zoster, caused by reactivation of Varicella Zoster
Huntingtons
Autosomal dominant neurodegenerative disorder characterised by lack of inhibitory GABA.
Chromosome 4, CAG
Chorea, dysarthria, dysphagia
Vascular dementia
Brain damage from vascular pathology. Step wise deterioration
Donepezil (AChI), Memantine (antiglutamate)
Alzheimers disease
Accumulation of Beta amyloid plaques and tau protein. 5As. Donepezil, rivastigmine
Normal pressure hydrocephalus
Reversible cause of dementia.
Wet whacky wobbly. MRI= hydrocephalus with enlarged ventricles.
VP shunt
Hydrocephalus
Abnormal accumulation of CSF in ventricles, often due to blocked aqueduct. In children you get bulging of fontanelles. Brain damage from pressure. Ventirculoperitoneal Shunt
Brain tumours
Loss of function, seizures, symptoms of raised ICP, lethargy and tiredness.
Astrocytomas, gliomas, oligodendroglial
Surgery, chemo if glioma, oral dexamethasone
What causes lethargy and tiredness in brain tumours
Pressure on brainstem
MS
Chronic autoimmune T cell mediated inflammtory disorder causing 2 or more CNS lesions disseminated in time and space (exclude similar). MRI.
IV methpred, betaferon, nataluzimab
GBS
Acute ascending inflammatory demyelinating polyneuropathy affecting the peripheral nervous system (Schwann cells) after and URTI or GI infection.
IV IG
Plasma exchange
Enoxaparin
Motor neurone disease
Cluster of major degenerative diseases characterised by selective loss of neurones in the motor cortex, CN nuclei and anterior horn cells. AMLS= upper and lower. Stumbling, foot drop, proximal myopathy, weak grip, aspiration pneumonia. Riluzole Amitryptilline Baclofen Diclofenac MDT
Cerebral palsy
Chronic disorders of posture and movement caused by non progressive CNS lesions sustained before 2 years old. Leading to delayed motor development, CNS signs, learning disability and epilepsy.
MDT
Baclofen, physio, respiratory support
Neurofibromatosis
Cafe au lait spots, freckling, dermal fibromas, nodular neurofibromas. Lisch nodules.
T1= more common, more cafe, dermal fibromas
T2= also get acoustic schwanoma, hearing loss?